OIL SHALE IS A SOFT, FINE-GRAINED SEDIMENTARY ROCK _______ OIL AND...

ĐỀ THI THAM KHẢO SỐ 5 PPTX

51. Oil shale is a soft, fine-grained sedimentary rock _______ oil and natural gas are obtained. A. from B. is from C. is which D. from which